Use construct_runtime in tests (#8059)

* impl some more

* add serde

* remove unused

* fix staking fuzz

* fix system bench

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/frame/system/src/offchain.rs

@@ -637,7 +637,7 @@ pub trait SignedPayload<T: SigningTypes>: Encode {
 mod tests {
 	use super::*;
 	use codec::Decode;
-	use crate::mock::{Test as TestRuntime, Call};
+	use crate::mock::{Test as TestRuntime, Call, CALL};
 	use sp_core::offchain::{testing, TransactionPoolExt};
 	use sp_runtime::testing::{UintAuthorityId, TestSignature, TestXt};
 
@@ -708,7 +708,7 @@ mod tests {
 						public: account.public.clone()
 					},
 					|_payload, _signature| {
-						Call
+						CALL.clone()
 					}
 				);
 
@@ -749,7 +749,7 @@ mod tests {
 						public: account.public.clone()
 					},
 					|_payload, _signature| {
-						Call
+						CALL.clone()
 					}
 				);
 
@@ -787,7 +787,7 @@ mod tests {
 						public: account.public.clone()
 					},
 					|_payload, _signature| {
-						Call
+						CALL.clone()
 					}
 				);
 
@@ -827,7 +827,7 @@ mod tests {
 						public: account.public.clone()
 					},
 					|_payload, _signature| {
-						Call
+						CALL.clone()
 					}
 				);